We are 3 weeks out.
Looking at the system it seems it will fit our touring style very well. We like hitting RD and touring hard until lunch. We have a checklist of what we want to do/accomplish for that day.After lunch we take a break and go back to the resort for nap time. Then we go back to the park for a very leisurely evening. We didn't book very many evening FP+ because we didn't want to get on to hardcore of an evening schedule. For us it's about being there as much as riding rides.This year we are actually showing up on Sunday afternoon and doing evening EMH at MK and we already have FP for that evening booked. To me that is awesome.
My theory is this. I think the new Fastpass system will make rope drop even more appealing than ever before. I think more people will book FP+ after 11 so they will sleep in later and won't get to the parks until time for their first FP. Imagine opening to noon being even less crowded than before.
I am looking at all of the positives I can.
To me this is going to be THE BEST TRIP EVER!!
I can't understand your logic.
You didn't book evening FP+s, although that is the only real advantage to FP+ ... because you didn't want to and want to more, go with the flow and do RD.
Except you used to be able to pull ... 3, 4, 5 FPs at RD ?? Without Tiers, and now you will be able to pre book 3, with tiers which in some parks really = 1 ...
When you return in the evening, the non-hardcore rides currently are showing much longer wait times than pre FP+ ... like, doubling and tripling in some cases. And you wont be able to FP them ...
We also have a bunch of reports of SB lines growing faster in the morning, because, though you don't think they will, people are in fact booking FPs for the morning. Heck even on these boards where people should "know better" there is someone asking about his 9:35 Safari FP+ and whether she/he will make it in time from their breakfast...
I really do hope you have an awesome trip, but I can't see how you could possibly look at FP+, and the amount you will be able (or rather not be able) to do, and this its going to make your trip the best trip ever ???

And we made a vow to NEVER let stuff like fastpasses, scheduling or anything that has to do with a clock get us in stressful situations on vacation. 

Have a fun trip!